Frankensteinteg
New Member
Hey everyone,
I know that this topic has been beaten to death, I have searched the other posts, but i cant find exactly the problem with burning oil that I am having listed.
My rebuilt B18B1 is smoking quite badly, enough to leave a decent cloud of blue smoke behind me when the light turns green at the intersection.
I have only put about 100 miles on the engine since the rebuild, and have been breaking in the engine by beating on it fairly hard, not hitting the rev limiter, but still racing around. First oil change was done after 50 miles, the next will be 300-400 miles. Oil consumption is a little hard to judge seeing as how early i did the first oil change...it was down to about 1/4 from the full mark on the stick after 50 miles.
I have not yet done a compression test, but am curious as to why it will burn oil after i let off the throttle when reving it as well (vacuum sucking oil past valve seals?), and why it seems to stop burning oil (visually) when the engine gets to operating temp, even when i rev the engine. and let off the throttle?
I rebuilt the engine myself:
-New PCV valve
-New rod, and crank bearings
-New piston rings (NPR), on old pistons (measurements were within spec), ring gaps installed 180 degrees out from the next, cylinder cross hatch redone with a Flex Hone at this time as well.
-Cylinder head was professionally rebuilt, with new stem seals, valves ground, and hot dipped. Guides were ok. Head was decked/planed. Cost a pretty penny too...:???:
Engine seems to run fine; has power, and doesn't seem to sputter, idles fine.
I pulled out the spark plugs, they are a little fouled, but not wet with oil, but the tops of all 4 pistons are black with what looks like oil.
Should I put some more miles on it before I make the call on what to do? Any ideas about the issues im having will be greatly appreciated.
I know that this topic has been beaten to death, I have searched the other posts, but i cant find exactly the problem with burning oil that I am having listed.
My rebuilt B18B1 is smoking quite badly, enough to leave a decent cloud of blue smoke behind me when the light turns green at the intersection.
I have only put about 100 miles on the engine since the rebuild, and have been breaking in the engine by beating on it fairly hard, not hitting the rev limiter, but still racing around. First oil change was done after 50 miles, the next will be 300-400 miles. Oil consumption is a little hard to judge seeing as how early i did the first oil change...it was down to about 1/4 from the full mark on the stick after 50 miles.
I have not yet done a compression test, but am curious as to why it will burn oil after i let off the throttle when reving it as well (vacuum sucking oil past valve seals?), and why it seems to stop burning oil (visually) when the engine gets to operating temp, even when i rev the engine. and let off the throttle?
I rebuilt the engine myself:
-New PCV valve
-New rod, and crank bearings
-New piston rings (NPR), on old pistons (measurements were within spec), ring gaps installed 180 degrees out from the next, cylinder cross hatch redone with a Flex Hone at this time as well.
-Cylinder head was professionally rebuilt, with new stem seals, valves ground, and hot dipped. Guides were ok. Head was decked/planed. Cost a pretty penny too...:???:
Engine seems to run fine; has power, and doesn't seem to sputter, idles fine.
I pulled out the spark plugs, they are a little fouled, but not wet with oil, but the tops of all 4 pistons are black with what looks like oil.
Should I put some more miles on it before I make the call on what to do? Any ideas about the issues im having will be greatly appreciated.
Last edited: